Grinding-machine



F. STACEY.

GRINDING MACHI'NE.

APPLICATION FILED JUNE5v, 1920.

1,400,466 Patented Dec. 13, 1921,.

UNITED STATES.

PATENT OFFICE; y

FRANK STACEY, OF BIRMINGHAM, :ElNGJLABTJ).

1 Grammars-MACHINE.

moonen.

To all whom may concern.'

Be it known that l, FRANK STAGEY, subject of the King of Great Britain, residing` at Vauxhall street, Birmingham, England,

flour-milling engineer, have invented cer-.

scribed and claimed improvedV grinding ma-V chine oit the grinding wheel type, particularly adaptable for grinding the peripheries of rolls.

The type of machine to which the invention relates is that in which the roll or work to be operated upon is revolubly mounted upon a support which bodily moves for longitudinal movement of said roll or work and in which the grinding wheel except for revolution and advancing movement for cut, isr immovable.

According to the present invention, a strongly built bracket carries the grinding wheel or wheels, which bracket crosses the roll or work in a bridge-like manner and has both of its ends or Yfeet strongly fitted to slide-supports whereby said bracket is strongly mounted at said ends or feet and may be moved transversely of the roll or work to ell'ect a grinding cut. Said roll or work is positioned beneath the bridge-like bracket in such disposition in relation to the grinding wheel or wheels that the grinding stresses are oblique and partly borne by the slideways and partly by screw devices used to move the ends or feet in said slideways to effect a grinding cut.

A machine suitable for chilled roll grinding is illustrated by the accompanying sheets of drawings, wl1erein i Figure l is a front elevation.

Fig. 2 is an end elevation, andV Fig. 3 is a plan of the bridge-like bracket separately. i

The roll ato be groundon its periphery is i shown as mounted by its shaft ends a2 a2 within bearing brackets c, o rigidly attached to a saddle cl arranged for movement upon a bede by a screw f and a screw box g suitably applied between the bed and the saddle.y

Rolls to be ground are similarly mounted and traversed in existing wheel grinding machines.

A. bridge-like bracket h supports th@ Y standards.

grinding wheel between the ends h2, 7a3, or" said bracket, which ends are movably anchored to the upperends of opposite uprights Z? and #n2 of. front and rear extensionsl and m of the bed e. l/Vithinthe space between these yuprights the saddle CZ carrying the roll a is mountedV to move. The bridge-likebracket is movably anchored forwardly and` rearwardly of the grinding wheel on each side the roll mounting, so that Specification of`Letters Patent. Patented Dec. 13, 1921.

Application filed.4 .Tune 5,` 1920. Serial No. 386,813.

spring` in. the bridge-like bracket is,V prevented, said bracket being strongly built and also strongly 'but movably mounted on the In the present instance such movable mounting is shown asI consisting oi' V slideways Z3 m3 formed on standards engagmg similarly-shaped grooves in the leet of the bracket. The ends or feet 71,2, if, are moved in the slideways to put the grind- ,ing wheel on the roll by a screw n carried by one of the standards and engaging a screw box, n2, carried, by one of said* feet. The bridge-like bracket la, comprises two members h4, h5 extending longitudinally of the bridge a distance apart and rigidly connected at their ends so that the grinding wheel z' revolves in a space h6 between said two members which are additionally stayed to each other transversely by integral transverse webs such as it? and its. The bearings for the grinding wheel z' are provided on the two members 7b4 and h5 at hg and IL10 respec-` tively.

lt will be clear from the drawings that the roll or work a is mounted and moved under the bridge, and that the grinding wheel is supported on the bridge, and that the latter, which is strongly built and also strongly but movably mounted at its ends to the bed most eiiiciently holdsthe grinding wheel upto its work without springing movement, the grinding stresses between the roll and the wheel being oblique and partly borne by the slideways Z3, ma and by the screw devices n n2.

The grinding wheel is` shown as driven from the pulleys 0, 02 by twin belts. r indicates a pulley or wheel for slowly revolving* the roll ar. The screw f is mounted in bearings fz, f3 in the bed e and is revolved from the pulleys m.

Having now described my invention what I claim and desire to secure by Letters Patent is 1. rIn a grinding machine, the combination of a support Inova-bie on a bedior the iongtndinal movement of the roller Work, ineans for revolvino' the roil orwork u on the su -Y e P P port, a bracket spanning tbe Work and adapted to carry the grinding Wheel7 said bracket being siidabiy iitted'to supports on said bed, means for moving the bracket kin its supports for grinding out, and means for revolvingthe grinding Wheel, snbsta'ntialiyY as described. f Y

2L In a gfinding` machine, tbe combination of a support movable on a bed for the longitudinal nioveinentof the lroii or Worin'means for-revolving the roii o'r Work upon the sup# port, a bracket spanning vthe Work Yand adapted to carry the grinding-2; vvbeeiysaid bracket being slidabiy fitted to supports kon said bed.; means Afor' moving the bracket in its supports for grinding cut so that the grinding stresses are oblique and I partly borne by the siidevvays and by said Int-ians,

and inea-ns forrevolving the grinding Wheel,

substantially as described.

. 3. In a grinding machine, the combination Y inovingtbe bracket inits supports for grinding cut9 and means for revolvlng the grind- Wheei', substantially as described. In testimony whereof I have hereunto set v my band in presence of tivo subscribing witnesses.

, FRANK sirncni Y(ino. T. FUERY,

Jer-1N P. FUERY. 

